Water-motor.



'No. 881,222. v PATENTED MAR.10,1908.

RBRBITENSTBIN.

WATER MOTOR. urmonmn FILED JUNE 7, 1907.

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uNrrED STATES PATENT onrroii.

FRANK BREITENSTEIN, OF DENVER, COLORADO.

WATER-MOTOR.

To all whom it may concern:

Be it known that I, FRANK BREITENSTEIN, a citizen of the United Statesof America, residing at the city and county of Denver and State ofColorado, have invented a new and useful Water-Motor, of which thefollowing is a specification.

My invention relates to improvements in water motors, and the objects ofmy invention are: First, to provide a water motor in which the piston isautomatically reversed at the ends of its reciprocal strokes. Second, toprovide a positively operating valve mechanism for water or other motivefluid motors. And third, to provide a simple, durable, and practicalwater-motor.

I attain these objects by the mechanism illustrated in the accompanyingdrawings, in which,

Figure 1, represents a longitudinal central section through a watermotor embody- Fig. 2, is a crosssection of Fig. 1 on line 2&2. Fig. 3,is an enlarged longitudinal central section of the compound valvemechanism of my water motor. Fig. 4, is a similar view showing the partsin another position. And Fig. 5, is a cross section of Fig. 4 on line55.

Similar letters of reference refer to similar parts throughout theseveral views.

Referring to the drawings, the letter H designates the cylinder, and Nand T the cylinder heads of my water motor. These cylinder heads aresecured to the cylinder by means of bolts H which are preferablyarranged to extend along the cylinder through both cylinder heads andthus clamp Both cylinder heads are provided with stuffing boxes H andglands H Within the cylinder a hollow piston head D is reciprocallyfitted, which preferably consists of a hollow disk body portion, and a'removable head end H which is secured to the hollow disk body portion byany suitable means, preferably by cap screws. This hollow piston isdivided into two independent chamber portions O and J, which areseparated from each other by an oblique partition D The chamber C is thefluid inlet chamber and the chamber J is the fluid exhaust chamber.

The piston D is provided with two tubular piston-rods B and K, which arethreaded or otherwise secured to apertures formed axially in theopposite ends of the piston. These piston rods are adapted to admit theSpecification of Letters Patent.

Application filed June 7, 1907.

Patented March 10, 1908.

Serial No. 377,777.

water or other motive fluid to the piston, from which it is dischargedinto the cylinder, and also to exhaust the water or other motive fluidfrom the cylinder through the piston, as will be hereinafter fullydescribed, and I preferably make them of different diameters, theexhaust piston rod K being of greater diameter than the fluid inletpiston rod B. The fluid inlet piston rod B enters the fluid inletchamber O of the piston, and the fluid exhaust piston rod K is connectedto the exhaust chamber J. The piston-rod B extends through the stuffingbox and gland of the cylinder head N into a tubular fluid inlet chamberH, which is threaded or otherwise secured to the outside of the hub ofthe stufling box H of the cylinder head N. This tubular inlet chamber ismade large enough to inclose the piston rod B, and

it is preferably closed by an end head portion and a fluid inletaperture A, is preferably formed in its side. The piston rod K extendsthrough the stuffing box H of the cylinder head T, a suflicient distancefor the length of its stroke, but only a fragment of its length isshown. Its outer end, however, is adapted to be connected to a wastepipe or tube which I do not illustrate. In the fluid inlet chamber Isecure a bushing F between the head ends of the piston, arranging it inaxial alinement with the axis of the piston. This bushing is provided atthe center of its length with a circumferential row of fluid port holesE, which extend through its shell into its interior, and through theopposite head ends of the piston in axial alinement with this bushing Iform ports G and S, which are smaller in diameter than the innerdiameter of the bushing, and which form fluid outlet ports from theinterior of the bushing through the opposite heads of the 7 ciprocallyin the bushing, and is provided with a circular row of ports P, whichextend radially through to an axial valve port M which extends throughit.

A stepped portion X, of less diameter than the enlargement WV, is formedon each side of the said enlargement, and these portions have radialports U and P respectively, which also open into the valve chamber MThese steps X form shoulders which limit the throw of the valve M, aswill hereinafter more fully appear. This main valve is consequentlyreciprocally mounted in the bushing valve seat and in the fluid inletports G and S, through either one or the other of which one of its endsalways extends, as it reciprocally operates to admit the operating fluidto the opposite ends of the cylinder, as will be fully explainedhereinafter. Within the axial valve port M which extends through thevalve M from end to end, is located a valve L, which I term an auxiliaryvalve. This auxiliary valve comprises a roundv stem which isreciprocally mounted in the axial port of the main valve, and is madesomewhat longer than the thickness of the piston in order that it willalways project through the ports G and S,'and beyond the opposite sidesof the piston far enough to strike the cylinder heads on the oppositestrokes of the piston, as will be explained hereinafter. This auxiliaryvalve has two circumferential recess ports R and V, formed in it at eachside of a collar portion L at the center of its length. The collarportion L is of the same diameter as the body of this auxiliary valveand fits the axial port of the main valve; consequently it forms aseparating partition between these two ports.

The ports V and. R are each provided with an extension portion R and Vwhich are formed by cutting away or flattening the periphery of thevalve adjoining the ports, and for a sufficient distance beyond theports, to bring the outer extremities of the said extensions beyond theends of the valve M, alternately, as the valve L is moved by contactwith the cylinder heads, and these extensions form passages for theescape of the exhaust pressure on either side of the enlargement WV ofthe valve M.

The three circumferential rows of ports U, P, and P which extendradially through the valve M, register with the ports R and V of theauxiliary valve, and these ports U, P and P are positioned at a distanceapart equal to the thickness of the central partition portion L of theauxiliary valve. This valve is moved alternately back and forth in thevalve M, by contact with the ends of the cylinder, and its movement ineach direction is limited by a pin 0, which extends through the valve Minto the circumferential recess R between the collar L and the oppositeend of the recess. By contact with the cylinder head N the valve L ismoved until it contacts with the pin 0, and its movement is therebyimparted to the valve M, which is then moved with the valve L until itsports P register with the ports E of the bushing, as shown in Fig. 3,when the pressure passes through ports E, P, and P to the end of thebushing F, between the enlargement and the end of the piston, and throwsthe valve M to the position shown in Fig. 4, or to the diametricallyopposite position, according to the position of the piston with respectto the ends of the cylinder.

The main and auxiliary valve mechanism is adapted to admit the water orother motive fluid from the piston rod B to the opposite ends of thecylinder, and I employ an independent valve mechanism for exhausting thewater or other motive fluid from the opposite ends of the cylinder. Thisvalve l place in the exhaust chamber J of the piston, and it consists ofa three-way winged stemshaped valve l, which is reciprocally mounted inports 1 and 1, formed through the opposite head ends of the pistonparallel with the axis of the piston, the valve stem being made longenough to extend across the thickness of the piston and through andbeyond these ports a distance suflicient to allow the, ends of thisvalve to strike the opposite cylinder heads of the cylinder at theopposite strokes of said piston. The opposite ends of this valve stemare provided with heads 1 which are secured to them in any suitablemanner. The outside entrances to the ports 1 and 1 are diverginglytapered to form seats and the inside edges of the heads 1 of the valve1, are beveled to fit the bevel of the seats.

The operation is as follows: Assuming the ports to stand as shown inFig. 1, the water or other fluid pressure enters the tubular inlet pipe,from a source of supply through a suitable pipe or hose which I do notillustrate, but which is adapted to be connected to the inlet apertureof this tube, and flows through the piston-rod B, into inlet chamber Cof the piston from which it flows through the port E of the valve seatbushing, and through the port G into the end 1 of the cylinder, and thisentering fluid pressure forces the valve I to move to close its adjacentport 1" and to open its port 1, thus allowing the fluid to escape fromend 2 of cylinder, into chamber J, and through the piston K to waste,and allows the piston to be moved to the opposite end 2 of the cylinderwhere the auxiliary valve 11 strikes the cylinder head N, and is movedin the axial port of the main valve M, toward the end 1 of cylinderuntil it strikes the stop pin 0, when the main valve M is moved farenrmgh in the same direction to close the bushing valve seats port E andalso the port G of the piston into which itsadjacent end moves, but atthe same time not enough to open the port S, which is still closed bythe opposite end of the valve M, but enough to cause the port P toregister with the port E and cause the motive fluid to flow throughports P and P in main valve M by means of port R into right hand end ofthe bushing valve seat which forces the main valve M to the extreme lefthand end of its movement, and at the time of the left hand movement ofthe main valve M any exhaust pressure in the left hand end' of the valveM escapes through the port U and the extension port V of the port V tothe atmosphere at the left hand end or end 1 of the cylinder, and thiscom leted movement of the main valve M by t e fluid pressure opens theports E and. S, and allows the motive fluid to flow from the chamber Cthrough the ports E of the bushing valve seat through port S to the end2 of the cylinder, and moves the exhaust valve 1 to close its port 1 andopen its port 1 and allow the water or other fluid pres sure to exhaustfrom end 1 of the cylinder into pistons chamber J and through piston Kto the atmosphere.

When the piston D reaches the end 1 of the cylinder, the auxiliary valveL strikes the cylinder head T and is shifted to the right far enough forits pin 0 to move the main valve to close ports E and S and still holdport G closed, and also far enough to allow ports P and U to be openedto register with valve seat port E by means of port V in the left end ofthe bushing valve seat F thereby forcing the valve M to extreme right inthe valve seat F, while at the same time exhaust pressure from the rightend of the valve seat F escapes by extension port R to end 2 of cylinderand then to atmosphere through exhaust valve L and its ports andpiston-rod K, and at the same time the motive fluid is again admitted toport E and G to end 1 of cylinder and the operation is again repeated.

My invention is simple and makes a positively operating differentialmovement valve mechanism that is free from springs and reliable in itsaction.

Having described my invention what I. claim as new and desire to secureby Letters Patent, is:

1. In a water motor, the combination with the cylinder and the pistonprovided with independent fluid inlets and exhaust chambers andoppositely extending piston rods, of the fluid outlet ports in theopposite sides of said pistons fluid chamber, the fixed bushing inalinement with said ports and provided with inlet ports, and thedifferential movement valve arranged in said bushing and ports andcomprising the main and auxiliary valves, said auxiliary valve beingarranged to contact with the opposite ends of said cylinder at theopposite strokes of said piston. v

2. In a water motor, the combination with the cylinder and the hollowpiston pro vided with oppositely extending hollow fluid inlet andexhaust piston rods, and containing independent fluid inlet and exhaustchambers of the outlet ports in the sides of said fluid inlet chamber,the fixed bushing valve seat in said chamber, the main valve in saidbushing, the auxiliary valve in said main valve, and cooperativelyarranged with said main valve to admit motive fluid to the oppositesides of said piston, and the exhaust valve and its ports in saidpistons exhaust chamber.

3. In a water motor, the combination with the cylinder, of a hollowpiston provided with a fluid inlet chamber and an independent fluidexhaust chamber, and provided with 'a hollow fluid inlet piston rod atone end,

connected to said pistons fluid inlet chamber, and a hollow fluidexhaust piston rod at the opposite end of said piston connected to saidpistons fluid exhaust chamber, ports through the opposite sides of theexhaust chamber of said piston, a valve stem extending through saidpiston and beyond it at each end far enough to engage the opposite endsof said cylinder, and provided with a valve at its opposite ends adaptedto control the oppositely arranged ports of said pistons fluid exhaustchamber, of ports through the opposite sides of the said pistons fluidinlet chamber, a fixed bushing valve seat in said ch amber registeringwith said ports, a main valve seated in said bushing valve seat and saidinlet chamber ports, an axial port in said main valve, an auxiliaryvalve in said axial port of said main valve adapted to engage theopposite ends of said cylinder at the opposite strokes of said piston,and a series of ports in said bushing valve seat and said main andauxiliary valves cooperatively arranged to admit a suitable motivefiuidto the opposite ends of said cylinder in alternate order.

4Q In a water motor, the combination of the cylinder, the hollow pistonreciprocally mounted on said cylinder and provided with an independentfluid inlet and an exhaust chamber, a fluid inlet piston-rod connectedto said pistons fluid inlet chamber and extending through said cylinderfrom one side of said piston, and a hollow piston rod connected to saidexhaust chamber and extending through said cylinder from the oppositeside of said piston, a port through the opposite sides of said piston insaid exhaust chamber, and a slide valve arranged to control said ports,and to admit the exhaust fluid from opposite sides of said piston inalternate order to said exhaust chamber, with a pair of ports positionedin the opposite sides of iary valve slidably mounted in said port andextending beyond said valve andsaid piston on opposite sides of it farenough to engage the opposite ends of said cylinder on the alternatestrokes of said piston, and adapted to be moved by said engagement withsaid cylinder a predetermined distance, fluid inlet ports through thecentral portion of said bushing valve seat to said main valve and tosaid fluid inlet chamber, inlet ports in the opposite sides of saidpiston, circumferential ports in said auxiliary valve at each side ofits central portion, and extension ports extending from saidcircumferential ports along the length of the opposite end portions ofsaid valve, a predetermined distance, suflicient to register beyond thesides of said piston in the opposite end strokes of said auxiliaryvalve, a plurality of radial ports in the center of the body portion ofsaid main valve arranged to register with the circumferential ports ofsaid auxiliary valve, and two groups of radial ports through the endportions of said main valve on opposite sides of said main valvescentral radial ports, arranged to register in alternate order with saidauxiliary valves ports and opening into said bushing valve seat and astop pin in said main valve extending into one of said auxiliary valvesports and adapted to permit the reciprocal movements of said auxiliaryvalve to cooperatively operate and move said main valve to alternatelyadmit fluid pressure to opposite ends of said piston and cylinder inalternate order.

5. In a water motor, the combination with the cylinder and the pistonprovided with a water inlet piston rod and chamber and an independentwater exhaust chamber and piston rod, with the fixed sleeve in saidinlet chamber, provided with inlet ports, the ports in the oppositesides of said chamber in alinement with said sleeve, the main valveslidably mounted in said sleeve, the auxiliary valve reciprocallymounted in said main valve and-arranged to strike the ends of saidcylinder at the opposite ends of said pistons reciprocal strokes, andthe operative ports in said main and auxiliary valves.

6. In a water motor, the combination with the cylinder, the piston, andthe water inlet and exhaust piston rods, of a fixed bushing in saidpiston, provided with inlet ports, water outlet ports in the oppositesides of said piston in alinement with said bushing, and a differentialmovement valve mechanism operatively mounted in said bushing and ports.

7. In a fluid controlled motor, the combination with the cylinder, thepiston, the

fluid inlet piston rod, and the valve controlled exhaust piston rod, ofa fixed bushing in said piston, provided with fluid inlet ports,

water outlet ports in the opposite sides of said piston, and adifierential movement valve in said bushing comprising a main valvereciprocally mounted in said bushing and said water outlet ports, and anauxiliary valve reciprocating within said main valve and arranged andadapted to strike the opposite ends of said cylinder at the ends of thereciprocal strokes of said piston, a stop pin in said main valve and ashoulder on said auxiliary valve arranged to engage said pin and movesaid main valve a predetermined dis tance, and a group of ports in saidmain and auxiliary valves cooperating with the inlet ports of saidbushing arranged and adapted to admit fluid pressure to move said. mainvalve the remainder of its operative movement.

8. In a fluid controlled motor, the combination with the cylinder, thepiston, the fluid inlet and exhaust piston rods, the fluid inletchamber, the bushing, the outlet ports in said fluid inlet chamber, andthe main auxiliary valves cooperatively arranged in said bushing, of afluid exhaust chamber in said pistonindependent of andseparated fromsaid fluid inlet chamber by a partition, fluid inlet ports in theopposite sides of said piston leading into said exhaust chamber, a valvestem reciprocally mounted in and extending beyond said ports, and avalve on the opposite ends of said valve stem arranged to strike theopposite ends of said cylinder at the ends of said pistons reciprocalstrokes, and arranged to seat in the entrance of said ports in alternateorder.

9. In a water motor, the combination with the cylinder, the pistonprovided with the water inlet and exhaust chambers, and the water inletand exhaust piston rods, of the fixed bushing and the water ports insaid bushing and said piston, the main and auxiliary water inlet valvesoperatively arranged in said pistons inlet chamber, within said bushingand ports, said auxiliary valve being provided with ports arranged tocommunicate with the opposite sides of said piston, and being arrangedto strike the opposite ends of said cylinder at the end of itsreciprocal strokes, and moved through its operative stroke, a set ofports in said main valve coopcrating with the ports in said bushing, andmeans connected with said auxiliary valve for moving said main valve toopen and close said bushing and pistons inlet chambers ports.

10. In a water motor, the combination with the cylinder and the piston,provided with an independent water inlet chamber and anexhaust chamberseparated by a partition, and the water inlet and exhaust piston rodsconnected to their respective chambers,

of the main and auxiliary valves and ports operatively mounted in saidpstons inlet chamber, and arranged to admit water from the oppositesides of said plston into the ep- Ill) posite ends of said cylinder,said auxiliary gage the opposite ends of said cylinder at the pistonbeing arranged to engage the opposite ends of its reciprocal strokes. 10ends of said piston at the ends of its recipro- In testimony whereof IafliX my signature cal strokes, a port in the opposite sides ofsaid inpresence of two witnesses.

5 piston into said pistons exhaust chamber, FRANK BREITENSTEIN.

and a reciprocal valve stem provided with a Witnesses: valve at each endarranged to fit the outside G. SARGENT ELLIOTT,

entrances to said ports and adapted to en- ADELLA M. FowLE.

